This program demonstrates an RDMA_READ-based flow control over RDMA fabric:

• Communication pattern: a single server reads large data from multiple clients
• Connection are established using rdma_cm library
• RC / DC transports are supported (DC is still not complete)
• Buffers are aligned to 4096 bytes

Flow control scheme:

• Each read operation is limited to "max_read_size" (32768) bytes by default. Larger requests are split to multiple segments of up to max_read_size.
• The total number of outstanding reads is limited to max_outstanding_reads (8 by default).
• Reads from multiple connections are scheduled by round-robin.
• The function do_rdma_reads implements the above scheme.

./rdma_fc -n 1 -r 32768 -o 8 -i 100

./rdma_fc <server-address>